Ratchet-wrench



L. A. EDWINSN. RATCHETr4 WRENCH. APPLICATION FILED MAY 2s, 192x.

Patented Sept. 20, 1921.

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Topeka, in the county of Vnut or bolt is LOUIS A. EDWINSON,

PATENT OFFICE.

OF yTOPEKA, KANSAS;

BATCHET-WRENCH.

T o all u: hom it may concern Be it known that I, LoUis A. EnwrNsoN, alcitizen of the United States, residing at Shawnee and State of Kansas,have invented certain new and useful Improvements in Ratchet-VVrenches,ofwhich the following is a specification.

This invention relates to ratchetwrenches and has special reference toaratchet wrench designed to reach bolts and nutsin places inaccessibleby an ordinary wrench.

One important object of the invention is to improve the generalconstructionl of wrenches of this character. v Y

A. secondimportant object of the invention improved arrangement of forsuch wrenches. ratchet wrench having a Spring frequently happens that atoo loose to overcome the pressure of the spring on the pawl and permitbackward movement of the pawl relative to the ratchet-v when the handleof the wrench is moved to obtain a fresh grip on the ratchet.Consequently the wrench will In using a pressed pawl it not operateeffectively.

A third object of the present invention is to provide, in a ratchetwrench, supplemental ratchet means whereby the wrench may be effectivelyoperated on a bolt or nut irrespective of its looseness.

lith the above and other objects in view, the invention consists ingeneral'o'f certain novel details of construction and combinations ofparts hereinafter fully described, illustrated in theaccompanyingdrawings, and specifically claimed.

In the accompanyingy drawings, like characters of reference indicatelike parts in the several views, an

Figure 1 is a side elevation of a wrench constructed in accordance withthis invention. Y

Fig. 2 is a plan thereof.

Fig. 3 is a section on the Fig. 2.

Fig. 4 is a section on the line L1--4c of. Fig. 3.

In the embodiment of the invention herein illustrated there is provideda body member 10 preferably in the form of a fiat bar having a handle 11formed on one end and having the other end 12 offset from the' axis ofthe handle and provided with a bearing opening 13. Mounted on this bodyis Z- shaped member 1,4: having a bearing opening line 3*-3 ofSpecification of Letters Patent.

Application mea may 28, 1921.

Patented sept. 2o, 1921. serial No. 473,519. v

15 vformed therein in alinement with the opening 13, the end of thismember containing the opening being 'spaced-from the body end 12.Between these -two ends'is llocated a main ratchet member 16 having ajournal 17 mounted inthe opening 13 anda journal 18 mounted in theopening 15 The'journal 18 is prolonged beyond the bearing and carries onits end a wrench socket 19 which is detachably mounted on the journalprojection by means of a screw 20. Surrounding the ratchet 16 is ahousing 21 having a substantially cylindrical body and mounted on thejournal 17 to revolve freely thereon. This housing has'the end, throughvwhichthe journal 18 projects, closed by-a plate 22. Projecting from oneside of the housing is 23 having a radial opening 24 therethrough whichhas an enlarged portion 25 at its inner end. Through thepopening 2projects the stem 26 of a pawlfwhich has a beveled head 27 engaging theratchet 16,` a spring 28 being located in the openingportion 25 betweensaid head and the interior end of this portion of said opening. Throughthe stem 26 extends a cross pin 29 and in the lug 23 are formed opposednotches 30 in which the cross pin normally sits. By means of thisarrangement the pawl may be turned to face in either direction withrespect to the ratchet as it may be moved outward by grasping the stern26 and may then be rotated 180 degrees. Moreover the pawl may be heldout of engagement with the ratchet by moving it outward and rotating itj that the cross pin will engage the face of the lug and will not enterthev notches.

Depending from the sides of the bar 10 is a pair of lugs 31 betweenwhich is' an opening 32.` Through this opening passes an operating lever33 fulcrumed on a bolt 34 passin through said lugs. This lever isprovide at one end with a handle 35 and has connected to its other endone end of a link 36 which has its other end connected to a lugextension 37 on the housing 21. By oscillating this handle 35 thehousing and the pawl are given an oscillatory motion and, with thesocket holding a comparatively tight bolt or nut, the ratchet will begiven the usual intermittent rotary movement.

Additional means are employed to insure proper motion to the ratchet incase of loose nuts or bolts. To this end there is mounted one quarterturn so ratchet 38 and on the Vmember 14 is pivoted through oscillationsof said handle.

a double paWl 39 having a finger controlledV 2. ratchet Wrench having abody pro- 35y end 40. In operating the device on loose vided with ahandle at one end, a socket nuts the main pawl is withdrawn. Then,revolubly mounted at the other` end of the by oscillating the handle 1land moving body, an operating lever pivoted tov the the supplementalpavvl alternately into and body, a pair of independent ratchets conoutof engagement with its ratchet the nut nected to the socket in fixedrelation thereto, 40 may be tightened sufliciently to permit use a Vpawloperatively associated with one of of t e main pawl and ratchet whichare said ratchets, an operative connection bemanner above set forth.pawl pivotally. supported from the body to l There has thus beenprovided a simple oscillate therewith and having operativey as- 45 andeflicient device of the lkind described sociation with the secondratchet.

and for the purpose specified. i l A ratchet wrench having a body pro-It is obvious that minor changes may be vided at one end with a handleandy having made. in the form and construction of the a fork formingmember at its other end, a

invention without departing from the ma ratchet between the sides of thefork, jour-,50

terial principles thereof. It is not there` nals extending from theratchet and rev# fore desired to confine the invention to the olublymounted in the sides of the fork, a exact'form herein shown anddescribed, but housing revolubly surrounding the ratchet,

it is wished to include allsuch as properly a reversible paWl mountedinthe housing, a

come Within the scope claimed; y lever pivotally mounted on the body, alink 55 aving thus described the invention, what connecting the housingvand lever, a second is -claimed asv new, is ratchet fixed on one of thejournals, a double l. A ratchet Wrench having a body propawl pivoted tothe fork forming member vided -at one end with a handle, a socket andoperatively associated with the second revolublylmounted at the otherend of the ratchet, and a socket carriedby one of said 60 body, anoperating lever vpivoted tothe Journals. body, a main ratchet mechanismassociated In testimony whereof I afixrmy signature.

with the socket and operable by said lever,

and an auxiliary ratchet mechanism also LOUIS'A. EDWIN SON.

